2. According to the Paper Aircraft Association, a paper airplane thrown in space will not fly; it will float in a straight line. Unless it hits an object, it could literally float forever (see Resources). Wingspan 3. The record wingspan of a paper airplane is 40 feet and 10 inches. The craft flew over 114 feet before crashing into a wall. Education 4. Scientists, engineers and students use paper airplanes to study aerodynamics.
Any type of trauma or injury to the testicles can cause severe pain and discomfort. The most common mechanism of testicular trauma occurs from blunt trauma (~85%), which can occur from sports injuries, a direct kick to the area, car accidents, and straddle injuries.
Pain or discomfort, with or without swelling, in a testicle or the scrotum. Change in the way a testicle feels or a feeling of heaviness in the scrotum. For example, 1 testicle may become more firm than the other testicle. Or, testicular cancer may cause the testicle to grow bigger or to become smaller.